Python note 13 (anonymous function)

First, anonymous function

In some cases, we need to pass the function as a parameter into another function, or the function as the return value of a function, at which point we can use the anonymous function.

The flag for an anonymous function is lambda.

>>> f = lambda x:x*x>>> f<function <lambda> at 0x000002ab91ca7f28>>>> F (5) 25> >> f = lambda a,b:a*a +b*b>>> f<function <lambda> at 0x000002ab922629d8>>>> F (5)

As the preceding code, the preceding is the parameter that needs to pass in the anonymous function, and the anonymous parameter does not need a return value, the return value is the result of the expression.

Python note 13 (anonymous function)